I am 20 years old have well built body and almost 6.5 inches dick after the last semester when I came home. I found there is only my sister in house a...d my parents had go to our native place and would come back The next day and my sister Anindita is class XI student in a local school. Her boobs just came out and they are so small in size she usually wears churidar after getting freash I went to my friends place and came back at night with packets of food after dinner I started to watching TV. And weirdly a conversation of sorts started between them, with her asking a question every time he went quiet, with no intention to cover up. Then I noticed it, her legs opened wider, her pussy gaped more and pulsed slowly. She asked if they had seen us, and was told not sure, she asked were we visible, he stated only from about 20 metres away. She asked had we offended him, he stated no it's natural. She asked if he jogged this way often etc etc, and all the time he was looking into her pussy. "I know you've been interested in what Bob and I are doing," she said, "but you're too young. But I'll help you get started if you'll model for my friend."Sis explained that I would come to her room and get naked so she could show off the various parts of my male anatomy and generally let the girl learn about boys from me.I was curious enough to agree, so we went to her room and she introduced me to Anne. Sis had me strip and stand there while she lead Anne in examining me. I was nervous and. He was 45 years old. They didn’t have any children. My sister was a very dominating person. My brother-in-law was like her slave.2 months back, my sister and her husband Vijay came to stay at our place after a dispute at her in-law’s place. My sister iss an educated person. So she was assisting me with the company’s responsibilities. Her husband was left at home to help my wife with house chores.My sister has very good leadership skills. I asked her to manage the office so I could take a good.